ARW wrote:

Huge wrote:

On 2012-09-03, ARW wrote:

Anyone know where they get the info from?

Android phones. They report their position to Google, who anonymise
and aggregate the data and use it to measure traffic flows.

So that is why some roads in the village are showing traffic details on some
days why they are not showing on other days? No phone users on the road.

Bear in mind that unless the phone user has the phone in satnav mode,
the GPS is likely to be switched off, so the phone will be relying on
phone masts and glimpses of WiFi from access points it passes for
(relatively imprecise) location information, let alone determining speed
as a function of time between these imprecise locations.